“Lung fire” should refer to blazing lung heat, which may be caused by external wind-heat or wind-cold, or liver-fire offending the lungs, etc. It is recommended to make a clear diagnosis by combining with the systemic symptoms. 1. Exogenous wind-heat or wind-cold: If you don’t pay attention to protection, or if you are weak, you may be exogenously exposed to wind-heat, which may cause fever, chills, sore throat, etc. Wind-heat will further invade the lungs, which may cause lung-heat to blaze, and the symptoms are cough and yellow sputum. In addition, if the external wind-cold, cold and heat (the evil gas is too long to stay into the heat), can also be committed to the lungs appear lung heat. 2. Liver fire against the lungs: if the emotional upset, stagnant qi, liver fire, can be further transverse against the lungs, resulting in liver and lung heat, symptoms such as cough and sputum yellow, or even hemoptysis, burning pain in the chest and ribs (chest and ribs part of the collective term), impatience, irritability, dizziness and other head swelling. If there is lung heat, it is recommended to ask the doctor for a clear diagnosis and treat the cause under the doctor’s guidance.